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An experimental cross produced the results shown in the following table.

An experimental cross produced the results shown in the following table. Correct Answer between 4.0 and 5.99

C. Since the expected ratio for the genotypes is 1:1:1:1, or 25% each, the expected number of each type of fly is 0.25 × 100, or 25. Using the formula provided on the equations and formulas pages for determining ?2 gives the following:

Related Questions

Four friends A, B, C and D need to cross a bridge. A maximum two persons can cross it at a time. It is night and they just have one lamp. Persons that cross the bridge must carry the lamp to find the way. A pair must walk together at the speed of slower person. After crossing the bridge, the person having faster speed in the pair will return with the lamp each time to accompany another person in the group. Finally, the lamp has to be returned at the original place and the person who returns the lamp has to cross the bridge again without lamp. To cross the bridge, the time taken by them is as follows: A :1 minute, B : 2 minutes, C : 7 minutes and D : 10 minutes. What is the total minimum time required by all the friends to cross the bridge?
In an experimental study of the effects of a new drug on depression a double-blind control technique is used, which of the following persons should not be informed as to which drug, experimental or placebo is being administered to each individual research participant?
1. Research participants in the experimental group.
2. Research participants in the control group.
3. Persons administering the drug.
4. Persons evaluating the drug effect.
Select the correct answer:
When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?
In a genetic cross between the genotypes WWXX and wwxx, the following phenotypic distributions were observed among the F2 progeny: WX, 562; wx, 158; Wx, 38; and wX, 42. Likewise, a cross between XXYY and xxyy yielded the following results: XY, 675; xy, 175; Xy, 72; and xY, 78. Similarly, a cross between WWYY and wwyy yielded: WY, 292; wy, 88; Wy, 12; and wY, 8. In all the genotypes, capital letters denote the dominant allele. Assume that the F1 progeny were self-fertilized in all three crosses. Also, double cross-over does not occur in this species. Which of the following is correct?
Four friends A, B, C and D need to cross a bridge in the night. A maximum of 2 people can cross at a time. They have only one lamp. A takes one minute to cross the bridge. B takes 2 minutes, C takes 8 minutes and D takes 11 minutes to cross the bridge respectively. A pair must walk together at the speed of the person who walks slowly. What is the minimum time required to cross the bridge by all four people? 
Six arms negotiators -- M,O,P,R,S and T-- are to be seated at a round table to discuss disarmament. There are exactly six chairs around the table. Each negotiator sits facing the center of the table and is directly opposite a negotiators across the table.The seating arrangement is subject to the following restrictions : T cannot sit next to P;S cannot sit next to M;R must sit next to M. Which of the following is an acceptable sequence of negotiators around the table ?
Six arms negotiators -- M,O,P,R,S and T-- are to be seated at a round table to discuss disarmament. There are exactly six chairs around the table. Each negotiator sits facing the center of the table and is directly opposite a negotiators across the table.The seating arrangement is subject to the following restrictions : T cannot sit next to P;S cannot sit next to M;R must sit next to M. If T sits directly across the table from O, who must sit on the other side of P?
Read the given seating arrangement information and answer the question that follows. Prashant, Kamal, Rishi, Sunita, Tanvi, Vimal, Wazir and Yogita are sitting at a square table in such a way that four of them are sitting at four corners of the table, while the other four are sitting in the middle of each of four sides of the table. The four who are sitting at the corners of the table are facing the centre, whereas those who are sitting in the middle of the sides of the table are facing outside. Prashant, who is facing the centre, is sitting third to the right of Vimal. Tanvi, who is facing the centre, is not an immediate neighbour of Vimal. Only one person is sitting between Vimal and Wazir. Sunita sits second to the right of Kamal. Kamal is facing the centre. Rishi is not an immediate neighbour of Prashant. Which of the following statements regarding Kamal is true?
Consider a database table T containing two columns X and Y each of type integers. After the creation of the table, one record (X= 1, Y=l) is inserted in the table. Let MX and MY denote the respective maximum values of X and Y among all records in the table at any point in time. Using M X and MY, new records are inserted in the table 128 times with X and Y values being MX + 1, 2*MY + 1 respectively. It may be noted that each time after the insertion, values of MX and MY change. What will be the output of the following SQL query after the steps mentioned above are carried out? SELECT Y FROM T WHERE X=7;
Which of the following statement(s) is/are false regarding the modern periodic table? i. In the modern periodic table, the elements are arranged in decreasing order of their atomic numbers. ii. In the modern periodic table, the elements are arranged in increasing order of their atomic masses. iii. In the modern periodic table, isotopes are placed in adjacent groups. iv. In the modern periodic table, the elements are arranged in increasing order of their atomic numbers.